Home / 31,228.75-43,116.49-18,486.01

Finding the Fourth Proportional to 31,228.75, 43,116.49 and 18,486.01

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Solution

The fourth proportional to 31,228.75, 43,116.49 and 18,486.01 is: 25,523.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,228.75 : 43,116.49 = 18,486.01 : x
  2. Step 2: Convert to fraction form
    31,228.75/43,116.49 = 18,486.01/x
  3. Step 3: Cross multiply
    31,228.75x = 43,116.49 × 18,486.01
  4. Step 4: Simplify right side
    31,228.75x = 797,051,865.30
  5. Step 5: Solve for x
    x = 797,051,865.30/31,228.75
  6. Step 6: Final answer
    x = 25,523.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.